Blowfish Encryption Manual » History » Version 9
sjefen6, 05/09/2013 07:31 PM
added information about libqca2-plugin-ossl in debian
| 1 | 1 | johu | h1. Blowfish Encryption |
|---|---|---|---|
| 2 | 1 | johu | |
| 3 | 5 | johu | * required version *>=0.7* |
| 4 | 4 | johu | |
| 5 | 2 | johu | h2. Introduction |
| 6 | 1 | johu | |
| 7 | 3 | johu | Blowfish can be used to encrypt messages between 2 persons in query, messages in channel and the topic. In Quassel all messages will be de-/encrypted on core. So it is *highly recommend* to *[[Client-Core_SSL_support|setup SSL]]* in case of you are not running monolithic client. |
| 8 | 2 | johu | |
| 9 | 2 | johu | !http://bugs.quassel-irc.org/attachments/304/core_deencryption.png! |
| 10 | 2 | johu | |
| 11 | 2 | johu | h2. Commands |
| 12 | 2 | johu | |
| 13 | 2 | johu | a) setting a key for a user or channel |
| 14 | 2 | johu | |
| 15 | 2 | johu | > Usage |
| 16 | 2 | johu | <pre><code>/setkey <nick|channel> <key></code></pre> |
| 17 | 2 | johu | |
| 18 | 2 | johu | b) deleting a key for a user or channel |
| 19 | 2 | johu | |
| 20 | 2 | johu | > Usage |
| 21 | 2 | johu | <pre><code>/delkey <nick|channel></code></pre> |
| 22 | 4 | johu | |
| 23 | 7 | johu | c) show key for a user or channel (since *0.8*) |
| 24 | 7 | johu | |
| 25 | 7 | johu | > Usage |
| 26 | 7 | johu | <pre><code>/showkey <nick|channel></code></pre> |
| 27 | 7 | johu | |
| 28 | 8 | Anonymous | d) Automatically negotiate a key with the target (DH-1080 key exchange; since *0.9.0*) |
| 29 | 8 | Anonymous | |
| 30 | 8 | Anonymous | > Usage |
| 31 | 8 | Anonymous | <pre><code>/keyx <nick|channel></code></pre> |
| 32 | 8 | Anonymous | |
| 33 | 4 | johu | h2. Build Instructions |
| 34 | 4 | johu | |
| 35 | 4 | johu | Blowfish support for Quassel depends on *"QCA":http://delta.affinix.com/qca/* (Qt Cryptographic Architecture) library. It is needed to compile your core/monolithic client with crypt compile option. |
| 36 | 4 | johu | |
| 37 | 4 | johu | bq. _..._ -DWITH_CRYPT=ON _..._ |
| 38 | 4 | johu | |
| 39 | 4 | johu | For detailed build instructions have at look "general build instructons":http://bugs.quassel-irc.org/projects/quassel-irc/wiki/#Specific-installation-instructions. |
| 40 | 6 | johu | |
| 41 | 6 | johu | h2. Troubleshooting |
| 42 | 6 | johu | |
| 43 | 9 | sjefen6 | * If Quassel crashes (like #1045) when tries to send a message to a <nick|channel> where a blowfish encryption key has been set with _<code>/setkey <nick|channel> <key></code>_, you have to install *"qca-ossl":http://delta.affinix.com/qca/*. |
| 44 | 9 | sjefen6 | * To use blowfish in debian you might need the "libqca2-plugin-ossl" package. "sudo apt-get install libqca2-plugin-ossl" |